Use Mopar brand wiper arm bushings. Don't waste your time with others

Divenut said

I dropped the Ebay ones in hot water to soften, then pressed them in with the socket. That was 11 years ago and so far do good.

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In that 11 years the "ebay ones" may have been passed on through 11586942 little back yard china sheds with a different little guy filing them out. QC. That is a large part of the problem